ST25R3920B

批量生产
Design Win Education

用于CCC数字钥匙和汽车中控台的车规级高性能NFC读卡器

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产品概述

描述

ST25R3920B是一种车规级高性能NFC通用器件,支持NFC发起设备、NFC目标、NFC读卡器和NFC卡模拟模式。

ST25R3920B为CCC(车联网联盟)数字钥匙应用而设计,可为车门把手或中控台等领域的汽车进入/启动应用快速开发产品,并具有配对、NFC卡保护以及Qi充电器等附加功能。由于非常坚固且具有高噪音容忍度,同时还能减少电磁辐射,因此,该器件甚至可以在恶劣条件下正常工作,从而使认证过程更加轻松。

该器件包括高级模拟前端 (AFE) 和高度集成的数据成帧系统,可用于ISO18092有源和无源发起设备、ISO18092有源和无源目标、NFC-A/B (ISO14443A/B) 读卡器(包括更高比特率)、NFC-F (FeliCa™) 读卡器、NFC-V (ISO15693) 读卡器(高达53 kbps)、NFC-A/NFC-F卡模拟。

AFE和数据成帧系统的特殊Stream和Transparent模式用以在读卡器或卡模拟模式下实现其他自定义协议。

ST25R3920B具有高射频功率和动态功率输出,可直接高效驱动天线,即使是在门把手中常见的小尺寸天线,也能实现较大的交互距离。该器件包含附加功能,因此特别适用于低功耗应用。它通过测量天线信号的振幅或相位,同时将功耗降至最低,实现低功耗卡检测。

ST25R3920B的设计具有较宽的电源电压范围(-40 °C至+105 °C为2.6至5.5 V,-20 °C至+105 °C为2.4至5.5 V)和较宽的外设IO电压范围(1.65至5.5 V)。

该器件具有高射频输出功率、低功耗模式、宽电源范围和AEC-Q100 2级认证,是汽车应用的理想选择。

  • 所有功能

    • 符合AEC-Q100标准
    • 工作模式
      • 读卡器/写卡器
      • 卡模拟
      • 有源和无源点对点
    • RF通信
      • 符合EMVCo® 3.1a模拟和数字标准
      • NFC-A / ISO14443A,高达848 Kb/s
      • NFC-B / ISO14443B,高达848 Kb/s
      • NFC-F / FeliCa™,高达424 Kb/s
      • NFC-V / ISO15693,高达53 Kb/s
      • NFC-A / ISO14443A (106 Kb/s) 和NFC-F / FeliCa™ (212/424 Kb/s) 卡模拟
      • 有源和无源点对点发起方和目标模式,高达424 Kb/s
      • 底层模式实现了兼容MIFARE Classic®或其他自定义协议
    • 主要特性
      • 动态功率输出 (DPO) 控制场强度,将其保持在给定范围内
      • 主动波束成形 (AWS) 减少过冲和下冲
      • 噪声抑制接收器 (NSR) 可在噪声环境中进行接收
      • 通过可变电容实现自动天线调谐 (AAT)
      • 集成符合EMVCo® 3.1a标准的EMD处理
      • 自动增益控制和静噪功能,可最大化SNR
      • 低功耗NFC有源和无源目标模式
      • 可调ASK调制深度,从0到82%
      • 集成稳压器,可提升系统PSRR
      • AM/PM和I/Q解调器,提供基带通道求和或自动通道选择功能
      • 可驱动两根独立的单端天线
      • 测量天线电压振幅和相位、RSSI、片上电源和稳压值
    • 外部通信接口
      • 512字节FIFO
      • SPI接口,高达5 Mb/s
      • I2C,高达400 Kb/s(快速模式下),1 Mb/s(极速模式下)及3.4 Mb/s(高速模式下)
    • 电气特性
      • 宽电源电压和环境温度范围(-40 °C至+105 °C为2.6至5.5 V,-20 °C至+105 °C为2.4至5.5 V)
      • 宽外设通信电压范围:1.65至5.5 V
      • 石英振荡器,使用27.12 MHz晶振,可快速启动

eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Power Management Design Center

Thermal-electrical Simulators for Components

Signal Conditioning Design Tool

NFC/RFID Calculators

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Power Supply Design Tool

SMPS design, by topology, by type and by product
PFC design with analog and digitial control
Supports various PCB configurations
Choose type:
DC/DC
AC/DC
太阳能电池充电器

LED Lighting Design Tool

Handles AC-DC and DC-DC design in common topologies
Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type:
DC/DC
AC/DC

Digital Power Workbench

Provides a step-by-step optimized design of power section and control loop
Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs

Power Tree Designer

Specify input/output power for each node in the tree
Check for consistency
Design each individual node
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AC Switches Simulator

Select ratings and application waveforms
Get junction temperature and blocking voltage graphs
Search and sort suitable devices

Rectifier Diodes Simulator

Select ratings and application waveforms
Estimate power losses
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STPOWER Studio

Supports long mission profiles
Provides power loss and temperature graphs
Helps define heatsink thermal properties

Twister Sim

Help select the right ViPOWER Automotive power device
Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
Supports various PCB configurations

TVS Simulator

Specify system ratings and surge waveform
Search and sort suitable devices

Estimate

Build simple schematics and firmware inputs in minutes
Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
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Active Filters

Handles multi-stage-designs and common topologies
Returns circuit component values
Provides gain, phase and group delay graphs
Low Pass, High Pass and Band Pass

Comparators

Handles most common configurations
Returns circuit components values
Provides I/O signal waveforms
Inverting, Non Inverting, Window

Low side Current Sensing

Returns circuit component values
Provides current error graphs

High side Current Sensing

Provides current error graphs.
Help to select the right High side current sensing and shunt devices.
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NFC Inductance

Input geometry and substrate properties
Get antenna impedance

UHF Link Budget

Enter forward and reverse link characteristics
The tool returns link budget estimate

NFC Tuning Circuit

Enter antenna parameter and matching target
Select the topology of the matching network
The tool returns component values for the desired design targets

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EDA符号、封装和3D模型

STMicroelectronics - ST25R3920B

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质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 材料声明**
ST25R3920B-AQWT
批量生产
VFQFPN 5X5X1 32L WETTABLE FLANKS 汽车应用 Ecopack2

ST25R3920B-AQWT

Package:

VFQFPN 5X5X1 32L WETTABLE FLANKS

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFQFPN 5X5X1 32L WETTABLE FLANKS

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

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ST25R3920B-AQWT
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ST25R3920B-AQWT 批量生产

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ST25R3920B-AQWT

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(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商